from django.db import models

from django.contrib.auth.models import AbstractUser

from itsdangerous import TimedJSONWebSignatureSerializer as JWSS, BadData
from django.conf import settings

# Create your models here.

from utils.models import BaseModel




class User(AbstractUser):
    mobile = models.CharField(max_length=11, unique=True, verbose_name='手机号码')

    email_active = models.BooleanField(default=False, verbose_name='邮箱验证状态')
    default_address = models.ForeignKey('Address', related_name='users', null=True, blank=True,
                                        on_delete=models.SET_NULL, verbose_name='默认地址')

    class Meta:
        db_table = 'tb_users'
        verbose_name = '用户'
        verbose_name_plural = verbose_name

    def set_active_url(self):
        # 生成加密serializer对象
        jwss = JWSS(settings.SECRET_KEY, 3360)
        # 将 userid和useremail 加密
        token = jwss.dumps({"userid": self.id, "email": self.email})
        # 返回响应
        url = 'http://www.meiduo.site:8080/success_verify_email.html?token=' + token.decode()
        return url

    @staticmethod
    def get_user_by_token(token):
        # 生成serializer对象
        jwss = JWSS(settings.SECRET_KEY, 3360)
        # 解码
        try:
            token_dict = jwss.loads(token)
        except BadData:
            return None

        userid = token_dict.get('userid')
        email = token_dict.get('email')

        # 查询user对象
        try:
            user = User.objects.get(id=userid, email=email)
        except User.DoesNotExist:
            return None

        return user

class Address(BaseModel):
    """
    用户地址
    """
    user = models.ForeignKey(User, on_delete=models.CASCADE, related_name='addresses', verbose_name='用户')
    title = models.CharField(max_length=20, verbose_name='地址名称')
    receiver = models.CharField(max_length=20, verbose_name='收货人')
    province = models.ForeignKey('areas.Area', on_delete=models.PROTECT, related_name='province_addresses', verbose_name='省')
    city = models.ForeignKey('areas.Area', on_delete=models.PROTECT, related_name='city_addresses', verbose_name='市')
    district = models.ForeignKey('areas.Area', on_delete=models.PROTECT, related_name='district_addresses', verbose_name='区')
    place = models.CharField(max_length=50, verbose_name='地址')
    mobile = models.CharField(max_length=11, verbose_name='手机')
    tel = models.CharField(max_length=20, null=True, blank=True, default='', verbose_name='固定电话')
    email = models.CharField(max_length=30, null=True, blank=True, default='', verbose_name='电子邮箱')
    is_deleted = models.BooleanField(default=False, verbose_name='逻辑删除')

    class Meta:
        db_table = 'tb_address'
        verbose_name = '用户地址'
        verbose_name_plural = verbose_name
        ordering = ['-update_time']